Determine os seguintes produtos, aplicando a regra pratica.
A) (4a-1)(4a+1)=
B) (16a^3+5a^2)(16a^3-5^2)=
C)(2xy+bz)(2xy-bz)=
D)(x^3y^2-x^2y^3)(x^3y^2+x^2y^3)
e)(9x^3y^5-3xy^3)(9x^3y^5+3xy^3)
f)(0,2ab+0,3c)(0,2ab-0,3c)
g(1,2m^3n^2+7m^2n^3(1,2m^3n^2-7m^2n^3)
h)(1,4c^5d^4-2,5c^4d^5)(1,4c^5d^4+2,5c^4d^5)
Soluções para a tarefa
Resposta:
Explicação passo-a-passo:
Determine os seguintes produtos, aplicando a regra pratica.
A) (4a-1)(4a+1)=
(4a - 1)(4a + 1) =
4a(4a) + 4a(1) - 1(4a) - 1(1)
16a² + 4a - 4a - 1
16a² 0 - 1
16a² - 1
B) (16a^3+5a^2)(16a^3-5^2)=
(16a³ + 5a²)(16a³ - 5a²)
16a³(16a³) + 16a³(-5a²) + 5a²(16a³) + 5a²(-5a²)
16.16a³a³ 16(5)a³a² + 5(16)a³a² + 5(-5)a²a²
256a⁶ 80a³a² + 80a³a² - 25a⁴
256a⁶ 0 - 25a⁴
256a³ - 25a⁴
C)(2xy+bz)(2xy-bz)=
(2xy + bz)(2xy - bz)
2xy(2xy) + 2xy(-bz) + bz(2xy) + bz(-bz)
2.2xxyy -2xybz + 2xybz - bbzz
4x²y² 0 - b²z²
4x²y² - b²z²
D)(x^3y^2-x^2y^3)(x^3y^2+x^2y^3)
(x³y² -x²y³)(x³y² + x²y³)
x³y²(x³y²) + x³y²(x²y³) - x²y³(x³y²) - x²y³(x²y³)
x³x³y²y² + x³x²y²y³ - x²x³y³y² - x²x²y³y³
x⁶y⁴ +x⁵y⁵ - x⁵y⁵ - x⁴y⁶
x⁶y⁴ 0 - x⁴y⁶
x⁶y⁴ - x⁴y⁶
e)
(9x^3y^5-3xy^3)(9x^3y^5+3xy^3)
(9x³y⁵ - 3xy³)(9x³y⁵ + 3xy³)
9x³y⁵(9x³y⁵) + 9x³y⁵(3xy³) - 3xy³(9x³y⁵) - 3xy³(3xy³)
9.9x³x³y⁵y⁵ + 9.3x³xy⁵y³ - 3.9xx³y³y⁵ - 3.3xxy³y³
81 x⁶y¹⁰ + 27x⁴y⁸ - 27x⁴y⁸ - 9x²y⁶
81x⁶y¹⁰ 0 - 9x²y⁶
81x⁶y¹⁰ - 9x²y⁶
f)
(0,2ab+0,3c)(0,2ab-0,3c)
0,2ab(0,2ab) + 0,2ab(-0,3c) - 0,3c(0,2ab) + 0,3c(-0,3c)
0,2.0,2aabb + 0,2.0,3abc + 0,3 .0,2abc - 0,3.0,3cc
0,04a²b² + 0,6abc + 0,06abc - 0,09c²
0,04a²b² 0 - 0,09c²
0,04a²b² - 0,09c²
g
(1,2m^3n^2+7m^2n^3(1,2m^3n^2-7m^2n^3)
(1,2m³n² + 7m²n³)(1,2m³n² - 7m²n³)
1,2m³n²(1,2m³n²) + 1,2m³n²(-7m²n³) + 7m²n³ (1,2m³n²) + 7m²n³(-7m²n³)
1,2.1,2m³m³n²n² + 1,2.(-7)m³m²n²n³ + 7.1,2m²m³n³n² + 7(-7)m²m²n³n³
1,44m⁶n⁴ - 8,4m⁵n⁵ + 8,4m⁵n⁵ - 49m⁴n⁶
1,44m⁶n⁴ - 49m⁴n⁶
h)
(1,4c^5d^4-2,5c^4d^5)(1,4c^5d^4+2,5c^4d^5)
(1,4c⁵d⁴ - 2,5c⁴d⁵)(1,4c⁵d⁴ + 2,5c⁴d⁵)
1,4c⁵d⁴(1,4c⁵d⁴) + 1,4c⁵d⁴(2,5c⁴d⁵) - 2,5c⁴d⁵(1,4c⁵d⁴) - 2,5c⁴d⁵(2,5c⁴d⁵)
1,4.1,4c⁵c⁵d⁴d⁴ + 1,4.2,5c⁵c⁴d⁴d⁵ - 2,5.1,4c⁴c⁵d⁵d⁴ - 2,5.2,5c⁴c⁴d⁵d⁵
1,96c¹⁰d⁸ + 3,5c⁹d⁹ - 3,5c⁹d⁹ - 6,25c⁸d¹⁰
1,96c¹⁰d⁸ 0 - 6,25c⁸d¹⁰
1,96c¹⁰d⁸ - 6,25c⁸d¹⁰